Electric-clock system



(No Model.) heats-Sheet 1.

- 2 S O. D. WARNER & A. D. BENNETT. ELECTRIC CLOCK SYSTEM.

N0. 387,704. Patented Aug. 14, 1888.

(No Model.) I v 2 Sheets-Sheet 2.

C. D.-WARNER & A. D. BENNETT.

ELECTRIC GLOOK SYSTEM.

. anaemic z M ra/3M7 @61 Wit QUOZMMJ UNITED STATES PATENT CHARLES D. \VARNER, OF ANSONIA, AND ARTHUR D. BENNE' T, OF NEW HAVEN, ASSIQNORS TO THE STANDARD ELECTRIC TIME COMPANY, OF NEW HAVEN, CONNECTICUT.

E LECTR l C- C C SXVS TEWL A SPECIFICATION forming part of Letters Patent 110381704, dated August 14. 1888.

Application filed May 7, 1888. Serial Nofliilfiilfi. (No model.)

To all whom it may concern.- the secondary clocks C. These secondary Be it known that we, CHARLES D. WARNER, clocks may be of various forms of construe ofAnsonia, in the county of New Haven and tion; but we prefer the form shown and de- State of Connecticut, and ARTHUR D.- BnN- scribed in the United States Letters Patent 5 NET'I, of New Haven, in the county of New No. 363,440, issued to Charles D. Warner May Haven and State of Connecticut, citizens of 24, 1887. g the United States, have invented certain new D is the dial-plate of such a clock, as seen and useful Improvements in Electric-Clock from the rear; E, the actuatingmagnet; F, Systems, of which the following isa full, clear, the armature-arm carrying a pawl and stop,

10 and exact description, reference being had to whereby the propellingwheel G and stopthe accompanying draw ngs. wheel H are properly actuated, the common This invention relates to those systems in shafts of such wheels being the minute-hand which an electric clock is arranged to open arbor and having operative connection with and close an electric circuit containing and 0p. the hour-hand sleeve.

r crating electric secondary'clocks. One of the secondary clocks, as the clock The object of the invention is to provide D, is located at the central oflice or near the 6 means by which any failure of the working r ulaton oas nhennderconstantinspection circuit-the circuitcontaifiing thesccommry is a'loca'i or snunt circuit,which extends 1 clocks-shall be at once made apparent by a from one side of the main battery J through 20 suitable signal. Thus, there are usually two the alarm-bell K to the armature contact conditions of failure that these circuits are spring L of the clock D, and then through the 0 always subject to, one being the weakening of armature to the main line B, as by a branch, the working-line battery so that thesccondary M, and another spring, N, bearing on the clocks operate irregularly or not at all, and armature-arm. The eiectro-magnet E of the 25 the rupturingof the working-line by which all secondary clock and its armature are conwork therein ceases. In either of these cases strueted and adjusted to operate more quickly 7 it is highly importantthat the condition of the than those of the alarm K, and they are also line be at once made known,that steps may be adjusted so that theirproper operation signipromptly taken to remedy the trouble. fies the working of all the secondary clocks- ,0 To this end ourinvention consists of an electhat is, this clock D may be adjusted so that trio alarm connected to the working-circuit upon thepartial failure of the main-battery and throughitto the electric clock or regulator, current, or for other similar cause, this clock the circuit or operating mechanism of which would fail to work before the other secondary alarm is rendered inoperative by the normal clocks would fail, and so provide for the bat 3 5 action of the secondary-clock line, but is closed tery being attended to before the working of or made operative and the alarm sounded the main line would actually become irregular whenever the secondaryclock line is not propor cease. erly working. The action of the system is as follows: So

Referring to the drawings, Figure 1 is a dia long as the working-circuit remains unbroken 4o grammatic view of a clock system embodying and the working-battery is ofsufficientstrcngth our invention, Fig. 2 being a similar but to operate thesecondary clocks,the movement 3 modified view. of the armature of the local secondary clock In the views, A represents the regulator, will take place before the coils of the alarm which may be of any of the well-known forms. can besufficiently charged to cause an alarm to 5 B is the secondary or working circuit, C bebe given, and the local circuit through the ing the secondary or service clocks. It is to alarm will be broken by such armature leavbe understood that the regulator is arranged ing the contact spring or springs of this local v to close the line B at regularly recurring in circuit. Under these conditions the system tervals, and thereby synchronously maintain will be understood to be in good order and to need no attention. If, however,the workingline he broken,the local secondaryclock will fair to operate, the local circuit will be held closed, and the alarm will sound every time the regulator acts to close the workingliue, thus calling attention to the fact that the secondary clocks have stopped. A like result is obtained by the reduction of thebattery-power or the accidental introduction into the working-line of a too high resistance, for then there would not be power enough exerted. by the magnet oi the local clock to move its armature and open the local circuit.

Thus far we have described the invention when it is applied to the working-circuit through the medium of a shunt or cross-circuit, The arrangement of the circuits may, however, be variously changed. Thus, in Fig. '2 the regulator A operates a relay-circuit, O, the relays of which, I and Q, respectively,close the workingcircuit and a local circuit, I, through the alarm K, this latter local circuit being connected with the local alarm clock I), as before. ingrcirouit to properly operate the secondary clocks will, after the manner already described, cause an alarm to be sounded.

The failure of the Work- Other arrangementscf circuits are possible; but those described will suflice to explain the principle of the invention.

What is claimed as new is- 1. In an electric-clock system,the combination of a secondary-clock circuit, a regulator for operating the same, and an alarm-circuit connected with said secondary circuit and rendered inoperative by the working thereof, whereby the alarm is prevented from sounding during the normal action of the secondaryclock circuit and sounded when their action becomes abnormal or ceases.

2. In an electric-clock system,the combinetion, with the regulator A, and the secondaryclock circuit B, the local clock D, and the alarincircuit I K,conuected with the workingcircuit and the local clock, substantially as 5 described, and for the purpose described.

onnunns n. WARNER. narnunn. BENNETT.

Witnesses: CHAS. S. .liAnlliJl'ON, L. U. FUNDMAN. 

